Mestrado em Ciências Florestais
URI Permanente para esta coleção
Nível: Mestrado Acadêmico
Ano de início: 2008
Conceito atual na CAPES: 5
Ato normativo: Portaria nº 398 de 29 de maio de 2025, publicado no DOU de 02/06/2025. Homologação do Parecer CNE/CES nº 176/2025
Periodicidade de seleção: Semestral
Área(s) de concentração: Ciências Florestais
Url do curso: https://cienciasflorestais.ufes.br/pt-br/pos-graduacao/PPGCFL/detalhes-do-curso?id=1424
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- ItemEfeito das condições climáticas e amostragem em parâmetros anatômicos da madeira de diferentes materiais genéticos de Eucalyptus(Universidade Federal do Espírito Santo, 2025-05-30) Silva, Renata Guilherme Cândido da; Moulin, Jordão Cabral ; https://orcid.org/0000-0002-5543-3853; http://lattes.cnpq.br/3577181658928552; Silva, Ana Paula Câmara da; https://orcid.org/0000-0001-7311-2159; http://lattes.cnpq.br/2191958294398301; Dambroz, Graziela Baptista Vidaurre ; https://orcid.org/0000-0001-9285-7105; http://lattes.cnpq.br/2988548512574129; https://orcid.org/0000-0003-2862-5179; http://lattes.cnpq.br/1201287928571230; Almeida, Maria Naruna Felix de ; https://orcid.org/0000-0001-6360-7780; http://lattes.cnpq.br/5436388734663217; Rodrigues, Brunela Pollastrelli; https://orcid.org/0000-0001-9108-1202; http://lattes.cnpq.br/9081214933626123; Ataide, Glaycianne Christine Vieira dos Santos ; https://orcid.org/0000-0002-1722-4073; http://lattes.cnpq.br/8641908177310762The productivity, basic density, and anatomical parameters of wood from species of the genus Eucalyptus are influenced by genetic and environmental factors. Understanding how these factors interact is essential for enhancing silvicultural strategies, selecting genetic materials, and increasing the efficiency of the forestry industry. This dissertation aimed to evaluate the effect of climatic conditions and sampling point on the variation of anatomical parameters of wood from different genetic materials of Eucalyptus, cultivated in three growth sites with varying degrees of aridity (São Paulo - MAI: -0.03; Bahia - MAI: -2.09; Maranhão - MAI: -3.27). To achieve this, 74 trees were sampled, with discs collected at positions 0, 25, 50, 75, and 100% of the commercial height and at DBH (1.3 m). In the first chapter, the influence of climatic conditions on productivity, basic density, and wood anatomy of 05 clones at six years of age was evaluated. Significant variations were observed among sites for all evaluated variables, with a strong correlation noted between the modified aridity index (MAI) and characteristics such as basic density, fiber dimensions, and vessel frequency. The least arid site (SP) showed higher productivity and more developed fibers, while increased aridity resulted in higher wood density and an increase in the Runkel index. Genotype x environment interaction was found to be crucial for clone adaptation and performance. In the second chapter, variation in the base to-top direction of anatomical characteristics was assessed, focusing on the representativeness of DBH and the development of predictive models. Fiber length and width and lumen diameter did not show a clear trend along the stem, while vessels exhibited a slight increase from base to top. Model analysis demonstrated that more accurate estimates of anatomical characteristics can be obtained by combining two to three sampling positions, reducing the need for sampling at all positions. These results underscore the importance of modeling and careful selection of sampling points for anatomical studies and industrial applications
- ItemDesempenho colorimétrico da madeira de espécies de clima temperado ao intemperismo em clima tropical(Universidade Federal do Espírito Santo, 2025-02-28) Pereira, Kamilly da Silva; Santos, Mário Ferreira Conceição; https://orcid.org/0000-0003-1981-834X; http://lattes.cnpq.br/7815489824754185; Batista, Djeison Cesar; https://orcid.org/0000-0003-4427-2457; http://lattes.cnpq.br/2211842232280717; https://orcid.org/0009-0008-8583-3349; http://lattes.cnpq.br/1386267569892406; Ataíde, Glaycianne Christine Vieira dos Santos; https://orcid.org/0000-0002-1722-4073; http://lattes.cnpq.br/8641908177310762; Gouveia, Fernando Nunes; https://orcid.org/0000-0003-2807-205X; http://lattes.cnpq.br/3243546427964883The appearance of wood, including its color and texture, is one of the most important characteristics for its use in solid products such as furniture, cladding, and terrace decking. Weathering can cause significant changes in the color of wood products used in outdoor applications, affecting their market acceptance and long-term performance. This study evaluated the colorimetric performance of four temperate wood species (Picea abies, Pinus sylvestris – heartwood and sapwood, Fagus sylvatica, and Robinia pseudoacacia) exposed to natural weathering under tropical climate conditions (Aw) in southeastern Brazil for 52 weeks. Ten replicate specimens per species were tested, measuring 25 x 50 x 150 mm. Wood color was measured using the CIE-Lab* system with a portable spectrophotometer. The colorimetric parameters lightness (L*), red-green (a*), and yellow-blue (b*) chromaticity coordinates were measured and used to calculate the color difference (ΔE). Wood color was monitored weekly during the first four months of testing. Afterwards, measurements were taken at four-week intervals. A perceptible color change in all temperate species was detected after five weeks of outdoor exposure. The heartwood of Pinus sylvestris showed the highest color stability. It is noteworthy that the temperate species were tested under severe conditions, as no protective coating was applied to the specimen surfaces. Therefore, for future studies, it is recommended to expose specimens with surface finishing products such as varnish and waxes.
- ItemEfeito das condições climáticas e amostragem em parâmetros anatômicos da madeira de diferentes materiais genéticos de Eucalyptus(Universidade Federal do Espírito Santo, 2025-05-30) Silva, Renata Guilherme Cândido da; Moulin, Jordão Cabral; https://orcid.org/0000-0002-5543-3853; http://lattes.cnpq.br/3577181658928552; Silva, Ana Paula Câmara da; https://orcid.org/0000-0001-7311-2159; http://lattes.cnpq.br/2191958294398301; Dambroz, Graziela Baptista Vidaurre; https://orcid.org/0000-0001-9285-7105; http://lattes.cnpq.br/2988548512574129; https://orcid.org/0000-0003-2862-5179; http://lattes.cnpq.br/1201287928571230; Ataíde, Glaycianne Christine Vieira Dos Santos; https://orcid.org/0000-0002-1722-4073; http://lattes.cnpq.br/8641908177310762; Rodrigues, Brunela Pollastrelli; https://orcid.org/0000-0001-9108-1202; http://lattes.cnpq.br/9081214933626123; Almeida, Maria Naruna Felix de; https://orcid.org/0000-0001-6360-7780; http://lattes.cnpq.br/5436388734663217The productivity, basic density, and anatomical parameters of wood from species of the genus Eucalyptus are influenced by genetic and environmental factors. Understanding how these factors interact is essential for enhancing silvicultural strategies, selecting genetic materials, and increasing the efficiency of the forestry industry. This dissertation aimed to evaluate the effect of climatic conditions and sampling point on the variation of anatomical parameters of wood from different genetic materials of Eucalyptus, cultivated in three growth sites with varying degrees of aridity (São Paulo - MAI: -0.03; Bahia - MAI: -2.09; Maranhão - MAI: -3.27). To achieve this, 74 trees were sampled, with discs collected at positions 0, 25, 50, 75, and 100% of the commercial height and at DBH (1.3 m). In the first chapter, the influence of climatic conditions on productivity, basic density, and wood anatomy of 05 clones at six years of age was evaluated. Significant variations were observed among sites for all evaluated variables, with a strong correlation noted between the modified aridity index (MAI) and characteristics such as basic density, fiber dimensions, and vessel frequency. The least arid site (SP) showed higher productivity and more developed fibers, while increased aridity resulted in higher wood density and an increase in the Runkel index. Genotype x environment interaction was found to be crucial for clone adaptation and performance. In the second chapter, variation in the base to-top direction of anatomical characteristics was assessed, focusing on the representativeness of DBH and the development of predictive models. Fiber length and width and lumen diameter did not show a clear trend along the stem, while vessels exhibited a slight increase from base to top. Model analysis demonstrated that more accurate estimates of anatomical characteristics can be obtained by combining two to three sampling positions, reducing the need for sampling at all positions. These results underscore the importance of modeling and careful selection of sampling points for anatomical studies and industrial applications.
- ItemNutrientes e carbono em Khaya(Universidade Federal do Espírito Santo, 2025-02-27) Carvalho, Matheus Azevedo; Momolli, Dione Richer; https://orcid.org/0000-0003-1235-2030; http://lattes.cnpq.br/2739086911200257; Moura, Cristiane Coelho de; https://orcid.org/0000-0001-6743-8638; http://lattes.cnpq.br/8485099797100386; Caldeira, Marcos Vinicius Winckler; https://orcid.org/0000-0003-4691-9891; http://lattes.cnpq.br/3624066484009682; https://orcid.org/0009-0006-2303-7107; http://lattes.cnpq.br/1390348815030551; Pereira, Rozimar de Campos; http://lattes.cnpq.br/6095243320311276; Dick, Grasiele; https://orcid.org/0000-0002-0896-546X; http://lattes.cnpq.br/3817205061058554; Souza, Jonicélia Cristina Araujo Vieira de; http://lattes.cnpq.br/9702494465901097This study aimed to evaluate the stem of Khaya grandifoliola, Khaya senegalensis, and Khaya ivorensis at 8 years and 7 months of age and to determine whether these species differ in their biomass, nutrient, carbon, and nutrient use efficiency (NUE) stocks. The study site is located in the Vale Natural Reserve, in the municipality of Linhares, Espírito Santo, Brazil (19°09′01.2″ S and 40°04′48.7″ W). A preliminary census was carried out, from which five trees of average diameter were selected for felling. From each tree, three 5 cm discs were removed at the base, middle, and top of the trunk. Two opposing wedges were then taken from each disc to represent heartwood and sapwood proportionally, and these wedges were separated into stembark and stemwood compartments. The samples were oven-dried to a constant weight, ground, and taken to the laboratory for determination of carbon, macro, and micronutrient contents on for each tree. Stemwood and stembark biomass were estimated based on the census of the same stand. Using the nutrient content and biomass data from the felled trees, a principal component analysis (PCA) was performed, considering statistical significance, collinearity, and coefficient of variation (CV). Nutrient and carbon stocks were calculated as the product of average nutrient content and census-based biomass. For the calculation of NUE, the ratio between nutrient content for each tree and its respective biomass was used. The contents, biomass, stocks, and NUE were subjected to analysis of variance and Tukey’s test (p < 0.05), while the PCA was subjected to a PERMANOVA (Permutational Multivariate Analysis of Variance). Macronutrient contents in the stembark followed the same order: Ca > N > K > Mg > S > P, whereas the stemwood nutrient order varied according to species. The biomass of K. senegalensis had the highest proportion of stembark (24.13%) relative to stemwood. In contrast, K. ivorensis showed the lowest stembark biomass but the highest stemwood biomass, not differing statistically from K. grandifoliola. The stemwood biomass of K. senegalensis was about 13% lower than that of the other species. The PCA indicated clustering among the Khaya species, explaining 83% of the total variance in three principal components (PC1 = 36.1%; PC2 = 26.4%; PC3 = 20.5%). K. senegalensis exhibited high stembark stocks of N (68.83 kg ha-1), P (4.33 kg ha-1), and K (53.37 kg ha-1) and high stemwood stocks of N (72.66 kg ha-1), Mg (12.91 kg ha-1), and P (10.66 kg ha-1), in addition to the highest carbon accumulation in stembark (3.07 Mg ha-1). K. ivorensis had the highest stemwood stocks of K (77.75 kg ha-1) and Fe (360.98 g ha-1), yet the lowest stocks of N and Ca. K. grandifoliola presented the highest stemwood stock of Ca and intermediate values for the other nutrients. Stemwood carbon stock did not differ among the species, with an average of 11.77 Mg ha-1. NUE in the stembark did not differ among species. In the stemwood, K. ivorensis demonstrated greater efficiency in the use of N, Ca, Mg, and Cu, but lower efficiency for Fe; K. grandifoliola was more efficient in the use of Zn, Mn, and K; and K. senegalensis stood out only in the NUE of Fe, showing low efficiency for N, Mg, and Mn.
- ItemTranspiração e respostas fisiológicas de plantas jovens de Eucalyptus sob diferentes níveis de restrição hídrica(Universidade Federal do Espírito Santo, 2025-07-25) Benevides, Aline Besteti Salucci; Aline Ramalho dos Santos; https://orcid.org/0000-0002-1560-3555; http://lattes.cnpq.br/6556857615537768; Toledo, João Vitor; https://orcid.org/0000-0002-9712-4776; http://lattes.cnpq.br/2007347247031334; Pezzopane, José Eduardo Macedo ; https://orcid.org/0000-0003-0024-4016; http://lattes.cnpq.br/3640768649683482; https://orcid.org/0000-0002-6699-7881; http://lattes.cnpq.br/2007347247031334; Nóia Júnior, Rogério de Souza ; https://orcid.org/0000-0002-4096-7588; http://lattes.cnpq.br/0320435408307252; Pezzopane, José Ricardo Macedo; https://orcid.org/0000-0001-5462-6090; http://lattes.cnpq.br/In Brazil, eucalyptus plantations have been expanding rapidly, accounting for approximately 76% of planted forest areas. However, forest plantations are highly water-sensitive, especially in the early stages of field establishment. This characteristic highlights the importance of accurately quantifying actual water consumption by plants, not only to optimize water management but, more importantly, to understand physiological thresholds under environmental stress conditions. Therefore, the present study aimed to evaluate the performance of a transpiration estimation method and investigate the effects of water restriction on young eucalyptus plants. The research was divided into two phases. In the first phase, seedlings of the hybrid Eucalyptus urophylla × Eucalyptus grandis (clone I144) were transplanted into 120-liter pots filled with commercial substrate enriched with controlled-release fertilizer. For 147 days, substrate moisture was maintained at 90% of maximum water holding capacity (MRWC), and plant transpiration was monitored using a lysimetric platform system. In parallel, an adaptation of the Penman-Monteith equation was tested to estimate transpiration based on periodic leaf area measurements and meteorological data from an automatic station installed at the experimental center. In the second stage, five months after transplanting—when the plants had an average leaf area of 8.45 m², diameter of 3.61 cm, and height of 2.85 m—three levels of substrate water availability were applied: 100% (Treatment 1), 60% (Treatment 2), and 40% of MRWC (Treatment 3). During the water restriction period, physiological parameters such as net photosynthesis, transpiration, stomatal conductance, photosystem II quantum yield (Fv/Fm), leaf water potential, and leaf temperature were evaluated. After five days of restriction, irrigation was reestablished for all treatments, and the same parameters were reevaluated to assess plant recovery. The results of the first stage demonstrated that the proposed model for estimating daily and hourly transpiration performed well when adjusted for leaf area, as evidenced by high coefficient of determination (R²) values and low root mean square error (RMSE) and mean absolute error (MAE). Including leaf area as an independent variable was essential for accurate modeling of transpiration, especially in young trees, a critical stage of field development where reliable estimates are often scarce. From a physiological perspective, analyzed in the second stage, water restriction caused progressively deleterious effects on the young plants of the clone evaluated, compromising water consumption, transpiration, stomatal conductance, net photosynthesis, and the efficiency of photosystem II. These changes culminated in morphological damage, such as increased basal leaf abscission and increased leaf temperature, especially under severe water restriction. Overall, the results reinforce the importance of considering structural variables, such as leaf area, when modeling transpiration. Furthermore, they demonstrate the physiological vulnerability of young eucalyptus plants to water limitation, highlighting the need for more effective management strategies to ensure functional performance under stress conditions